{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:15.720418", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2013-Jan-18_to_2013-Jan-22_76.5_23.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2013010000592}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "January 18 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 22 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 62728.797267512244}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["India"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 23.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 76.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "76.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 73.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 77.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 24.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-01-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.35, 22.25], [73.25, 22.5], [73.47, 23.03], [74.0, 23.25], [74.25, 23.15], [74.5, 23.25], [75.03, 23.03], [75.25, 22.5], [75.04, 22.0], [75.25, 21.5], [75.03, 20.97], [74.5, 20.75], [74.25, 20.85], [74.0, 20.75], [73.47, 20.97], [73.25, 21.5], [73.35, 21.75], [73.25, 22.0], [73.35, 22.25]]]]}, "2013-01-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.35, 22.25], [73.25, 22.5], [73.47, 23.03], [73.82, 23.18], [73.97, 23.53], [74.5, 23.75], [74.8, 23.63], [74.97, 24.03], [75.32, 24.18], [75.47, 24.53], [76.0, 24.75], [76.53, 24.53], [76.68, 24.18], [76.75, 24.15], [77.0, 24.25], [77.53, 24.03], [77.75, 23.5], [77.53, 22.97], [77.18, 22.82], [77.15, 22.75], [77.25, 22.5], [77.03, 21.97], [76.68, 21.82], [76.53, 21.47], [76.0, 21.25], [75.75, 21.35], [75.5, 21.25], [75.25, 21.35], [75.18, 21.32], [75.03, 20.97], [74.5, 20.75], [74.25, 20.85], [74.0, 20.75], [73.47, 20.97], [73.25, 21.5], [73.35, 21.75], [73.25, 22.0], [73.35, 22.25]]]]}, "2013-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.35, 22.25], [73.25, 22.5], [73.47, 23.03], [73.82, 23.18], [73.97, 23.53], [74.5, 23.75], [74.8, 23.63], [74.97, 24.03], [75.32, 24.18], [75.47, 24.53], [76.0, 24.75], [76.25, 24.65], [76.5, 24.75], [77.03, 24.53], [77.18, 24.18], [77.53, 24.03], [77.75, 23.5], [77.53, 22.97], [77.18, 22.82], [77.15, 22.75], [77.25, 22.5], [77.03, 21.97], [76.68, 21.82], [76.53, 21.47], [76.0, 21.25], [75.75, 21.35], [75.5, 21.25], [75.25, 21.35], [75.18, 21.32], [75.03, 20.97], [74.5, 20.75], [74.25, 20.85], [74.0, 20.75], [73.47, 20.97], [73.25, 21.5], [73.35, 21.75], [73.25, 22.0], [73.35, 22.25]]]]}, "2013-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.85, 22.75], [73.75, 23.0], [73.97, 23.53], [74.5, 23.75], [74.8, 23.63], [74.97, 24.03], [75.32, 24.18], [75.47, 24.53], [76.0, 24.75], [76.25, 24.65], [76.5, 24.75], [77.03, 24.53], [77.18, 24.18], [77.53, 24.03], [77.75, 23.5], [77.53, 22.97], [77.18, 22.82], [77.15, 22.75], [77.25, 22.5], [77.03, 21.97], [76.68, 21.82], [76.53, 21.47], [76.0, 21.25], [75.75, 21.35], [75.5, 21.25], [75.25, 21.35], [75.0, 21.25], [74.75, 21.35], [74.5, 21.25], [73.97, 21.47], [73.75, 22.0], [73.85, 22.25], [73.75, 22.5], [73.85, 22.75]]]]}, "2013-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[75.25, 24.0], [75.47, 24.53], [76.0, 24.75], [76.25, 24.65], [76.5, 24.75], [77.03, 24.53], [77.25, 24.0], [77.15, 23.75], [77.25, 23.5], [77.03, 22.97], [76.5, 22.75], [75.97, 22.97], [75.82, 23.32], [75.47, 23.47], [75.25, 24.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.5695393543923615}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.5150292813337436}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.889977550624508, 15.362731410637423, 15.206025968045196, 14.989662797538926, 13.938448711011745]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.946493336611582, 13.517644894214868, 12.776855333966012, 12.731419862899145, 13.765307196722688]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.0792084662874117, -3.500149002828109, -3.60041420008244, -3.5518906736920237, -3.49823483097695]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.7408924863374295, -4.293649523622378, -4.5695393543923615, -4.531136684932392, -3.6649038205621878]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.555617042350089, -1.6121445186186645, -1.6607807884671075, -1.6242660769122912, -1.4194770977547073]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7057241264247036, -2.1115236221281295, -2.1800580011475352, -2.0268055171980235, -1.5244342274490346]}}